Protection tooth for coil shaping, protection tooth device and coil shaping equipment

Abstract

The invention provides a protection tooth for protection in a stator coil shaping process, and a protection tooth device and coil shaping equipment which are arranged based on the protection tooth. The protection tooth comprises a protection tooth body and protection tooth teeth integrally formed with the protection tooth body. When the coil is subjected to external shaping, the teeth of the protection teeth can be inserted between the part, protruding out of the iron core, of the coil winding and the insulation paper in the groove of the iron core, and at the moment, in the shaping process of the coil winding protruding out of the iron core, the acting force on the coil winding can act on the protection teeth on the inner side; therefore, the coil winding is prevented from directly extruding the insulation paper in the iron core groove, and the electrical performance defect of the stator caused by deformation or damage of the insulation paper is avoided.

Description

Technical Field

[0001] The invention relates to a motor stator processing technology, and in particular to a protective tooth for protecting insulating paper in an iron core slot during coil shaping in motor stator processing and a coil shaping device for shaping the coil. Background Art

[0002] The motor stator includes an iron core, wire slots arranged in the iron core, and coil windings embedded in the wire slots. Therefore, during the stator manufacturing process, the enameled wire needs to be wound by a winding machine to form a coil winding, and then the coil winding is transferred to the mold head of the coil embedding machine, and the coil winding is embedded into the wire slots on the iron core through the mold head.

[0003] After the coil winding is embedded in the wire slot on the iron core, the coil needs to be shaped. The prior art provides some technologies for shaping the stator coil, such as the motor stator coil and the insulating paper shaping device embedded in the wire slot with the publication number CN106253593B, the motor winding group external shaping device with the publication number CN110445325B, and a stator coil shaping device with the publication number CN113131687B. However, in the process of shaping the coil, the above-mentioned shaping device does not protect the insulating paper embedded in the iron core groove, causing the coil to squeeze the insulating paper, causing a certain amount of squeezing or even damage to the insulating paper, affecting the performance of the motor. Summary of the invention

[0004] In view of the problem that the coil winding squeezes the insulating paper in the existing motor stator coil shaping, causing the insulating paper to be squeezed, deformed or even damaged, the embodiments of the present application provide protective teeth, protective tooth devices and coil shaping equipment for coil shaping.

[0005] The protective tooth for coil shaping provided in the embodiment of the present application comprises a long thin sheet-shaped protective tooth body, the protective tooth body comprises an integrally formed first end and a second end, the first end is provided with a protective tooth driving part for driving the protective tooth to move forward and backward, the second end of the protective tooth is connected with a protective tooth tooth integrally formed with the protective tooth body, the protective tooth tooth comprises a first transition part, a second transition part, a first straight connection part, a second straight connection part, a first arc-shaped tooth tip part and a second arc-shaped tooth tip part, wherein a symmetry plane is provided in the middle along the length direction of the protective tooth body, the first direct connection part and the second direct connection part are symmetrical about the symmetry plane, and the The first arc-shaped tooth tip portion and the second arc-shaped tooth tip portion are symmetrical about the symmetry plane; the first transition portion is respectively connected to the first direct connection portion and the second end of the protective tooth body, and the second transition portion is respectively connected to the second direct connection portion and the second end of the protective tooth body, and the first transition portion and the second transition portion form a gradually shrinking transition portion from the second end of the protective tooth body to the protective tooth; the first end of the first arc-shaped tooth tip portion is connected to the first direct connection portion, and the first end of the second arc-shaped tooth tip portion is connected to the second direct connection portion, and the second end of the first arc-shaped tooth tip portion is integrally connected to form an outwardly convex arc-shaped protective tooth tooth portion.

[0006] The protective teeth provided in the embodiment of the present application can be used on coil shaping equipment. When shaping the coil windings at both ends of the stator protruding outside the iron core, the protective teeth can be inserted between the external coil windings and the insulating paper, so that the shaping force on the outer wall coil winding will be blocked by the protective teeth, preventing it from directly contacting the insulating paper through the coil winding, causing squeezing or damage to the insulating paper.

[0007] Based on the same invention purpose, the embodiment of the present application provides a protective tooth device, including a circular ring slide seat with a through hole in the middle, and a first end surface of the slide seat is evenly spaced along the ring and provided with a plurality of protective tooth slide grooves facing the center of the circle;

[0008] Each of the protection tooth slide grooves is provided with a protection tooth as described above which can move radially along the protection tooth slide groove;

[0009] A protection tooth driving module, wherein the protection tooth driving module is respectively connected to the protection tooth driving part of each protection tooth and is used to drive the protection tooth to move along the protection tooth sliding groove.

[0010] The protective tooth device provided in the embodiment of the present application drives the protective tooth to move radially along the protective tooth slide groove of the slide seat through the protective tooth driving module, thereby controlling all the protective teeth arranged on the protective tooth slide groove to complete the two actions of extension and retraction. When the protective tooth is in the extended state, all the protective teeth extend radially toward the center of the circle, so that the protective teeth of the protective tooth can be inserted between the external coil winding and the insulating paper, avoiding squeezing the insulating paper during the shaping of the outer wall coil winding, causing deformation or damage.

[0011] Based on the same invention purpose, the embodiment of the present application also provides a coil shaping device, including the protective tooth device as described above;

[0012] A plurality of external shaping slide grooves facing the center of the circle are evenly spaced along a circular ring on a second end surface opposite to the first end surface of the slide seat;

[0013] An external shaping block is arranged in each of the external shaping chute, and the external shaping block is provided with an arc surface toward the center of the circle;

[0014] The outer shaping driving component is connected to the outer shaping block and drives the outer shaping block to move radially along the outer shaping slot, so that the arc surfaces of the outer shaping block are enclosed to form a ring when they are close.

[0015] The coil external shaping device provided in the embodiment of the present application has an external shaping block which can move along the external shaping chute and enclose a circle when moving toward the center of the ring, and is used to shape the external coil winding protruding from both ends of the stator core. At the same time, the protective teeth are inserted between the external coil winding and the insulating paper of the core groove to protect the insulating paper, so as to avoid the external coil winding directly squeezing the insulating paper during the external shaping of the outer wall coil winding, thereby avoiding squeezing or damaging the insulating paper and ensuring good electrical performance of the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the overall structure of a coil shaping device provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the exploded structure of a coil shaping device provided in an embodiment of the present invention;

[0019] Figure 3It is a schematic diagram of the slide structure;

[0020] Figure 4 For Figure 3 A schematic diagram of the slide structure viewed from an angle A;

[0021] Figure 5 It is a schematic diagram of the structure of the top view of the protection tooth;

[0022] Figure 6 Schematic diagram of the structure of the protective gear turntable from top view.

[0023] In the figure: 1, sliding seat; 11, inner arc surface; 12, outer arc surface; 13, first end surface; 14, second end surface; 15, protection tooth slide groove; 16, first positioning component; 17, outer shaping slide groove; 18, second positioning component; 2, protection tooth; 21, protection tooth body; 211, first end; 212, second end; 22, protection tooth tooth; 221, first transition part; 222, second transition part; 223, first straight connection part; 224, second straight connection part; 225, first arc-shaped tooth tip part; 226, second arc-shaped tooth tip part; 23 , first needle roller; 3, protective gear turntable; 31, strip-shaped through groove; 311, first segmented groove; 312, second segmented groove; 313, third segmented groove; 314, fourth segmented groove; 315, fifth segmented groove; 32, protective gear turntable handle; 4, protective gear pressure cover; 41, stator support block; 42, stator positioning component; 5, external shaping block; 51, external shaping slider; 511, card slot; 52, external shaping arc block; 521, buckle; 53, second needle roller; 6, external shaping turntable; 61, external shaping turntable handle; 7, external shaping pressure cover. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] It should be noted that the terms "first", "second", "symmetrical", "array", etc. are only used to distinguish between description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "symmetrical", etc. can explicitly or implicitly include one or more of these features; similarly, when the quantity of certain features is not limited in the form of words such as "two" or "three", it should be noted that this feature also explicitly or implicitly includes one or more feature quantities;

[0026] In the present invention, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "fixation" and the like should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, a direct connection, welding, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the description and drawings combined with specific circumstances.

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] The production process of the stator of the motor generally includes the production of the stator core. The finished stator core is provided with coil winding slots, and then insulating paper is inserted into the slots. The insulating paper is used to isolate the electrical performance of the stator core and the coil winding. The coil winding is then wound by a winding machine, and the coil winding is transferred to the slots with insulating paper inserted. The prior art also provides other technologies for inserting coil windings into slots, such as directly winding enameled wire in the slots of the core with insulating paper inserted by a winding machine. These steps can adopt the mature technology provided by the prior art and will not be repeated here. After the coil winding is inserted into the slot, the coil winding needs to be externally shaped. The embodiment of the present application provides a coil shaping device.

[0029] like Figures 1 to 6 As shown, the coil shaping equipment provided in the embodiment of the present application mainly includes two parts of functions. One part is to perform external shaping on the part of the coil winding protruding from the core, that is, an external shaping device is provided, and the other part is to protect the insulating paper during the external shaping process, that is, a protective tooth device is provided.

[0030] The coil shaping device provided in the embodiment of the present application has a slide 1 as its basic component, which provides a platform for installing various components. Figure 3 , Figure 4 As shown, the slide 1 is arranged in a circular ring shape as a whole, and the through hole arranged in the middle is used for the stator core or the external coil winding on the stator core to pass through. Therefore, the middle through hole is arranged according to the outer diameter of the stator core to be arranged, and is generally larger than the outer diameter of the stator core. The slide 1 generally includes four surfaces, namely an inner arc surface 11, an outer arc surface 12, a first end surface 13 (or lower end surface) and a second end surface 14 (or upper end surface) arranged in parallel between the inner arc surface 11 and the outer arc surface 12.

[0031] A protective tooth slide groove 15 is provided on the first end face 13 of the slide seat 1. One implementation of the protective tooth slide groove 15 is to run through the entire first end face 13 from the inner arc surface 11 to the outer arc surface 12. In this way, on the one hand, it is convenient to process the protective tooth slide groove 15, and on the other hand, it is also convenient for the protective tooth 2 to move in the protective tooth slide groove 15. The protective tooth slide groove 15 is set from the outer arc surface 12 along the diameter direction toward the inner arc surface 11. The depth and width of the protective tooth slide groove 15 need to be set according to the width and thickness of the protective tooth, so that the protective tooth 2 can slide smoothly therein. There are multiple protective tooth slide grooves 15, and the specific number of them is determined according to the stator core wire slots that need to be arranged. In principle, the insulating paper on each stator core wire slot needs a protective tooth 2 to cover it for protection. Since the core wire slots are generally arranged at uniform intervals on the iron core, the protective tooth slide grooves 15 in the embodiment of the present application are also arranged at uniform intervals.

[0032] Each protection tooth slide groove 15 is provided with a protection tooth 2. Figure 1 , Figure 2 , Figure 5 As shown, the protective tooth provided in the embodiment of the present application includes two parts: a protective tooth body 21 and a protective tooth 22. The two parts are integrally formed, and the thickness of both parts is thin sheet-like. The thickness setting mainly meets the need of structural strength, so that during the external shaping process of the coil winding, the force exerted on the protective tooth 22 will not cause the protective tooth 22 to be significantly deformed. The size setting of the protective tooth 22 needs to meet the need that during the movement, it can easily pass through the gap between the coil windings of different wire slots, and at the same time, it can cover the top gap of the wire slot, thereby protecting the insulating paper inside the wire slot.

[0033] The protective tooth provided in the embodiment of the present application has a protective tooth body 21 in the shape of a long strip, that is, the overall width is much greater than the thickness, and the length is much greater than the width of the rectangular parallelepiped. Here, much greater than is a quantitative relationship of at least 2 times or more. The specific size is set as needed. The protective tooth body includes an integrally formed first end 211 and a second end 212, wherein when the protective tooth 2 is placed in the protective tooth slide groove 15, the first end 211 of the protective tooth body 21 is close to the outer arc surface 12 of the slide seat, and the second end 212 is close to the inner arc surface 11. The first end 211 of the protective tooth body 21 is provided with a protective tooth driving part for driving the protective tooth to move forward and backward. The protective tooth driving part can be used to connect a power component. In the implementation method provided in the embodiment of the present application, the protective tooth can be driven to move by connecting a small cylinder to each protective tooth driving part. However, this solution requires a large number of small cylinders to be arranged in a circle, the structure is complex, and synchronous control is difficult. In the preferred embodiment provided in the embodiment of the present application, the protective tooth driving part is a cylindrical first needle roller 23 vertically arranged on the upper surface of the first end 211 of the protective tooth body 21. Therefore, the protective tooth 2 in the embodiment of the present application can be driven integrally and synchronously by the protective tooth turntable 3 to extend toward the center of the circle, thereby protecting the insulating paper, or shrink integrally away from the center of the circle, so that the protective tooth teeth are separated from the stator core.

[0034] The second end 212 of the protective tooth body 21 is connected to a protective tooth 22 integrally formed with the protective tooth body 21, and the protective tooth 22 includes a first transition portion 221, a second transition portion 222, a first straight connection portion 223, a second straight connection portion 224, a first arc-shaped tooth tip portion 225, and a second arc-shaped tooth tip portion 226, wherein a symmetry plane is provided in the middle along the length direction of the protective tooth body, the first straight connection portion 223 and the second straight connection portion 224 are symmetrical about the symmetry plane, and the first arc-shaped tooth tip portion 225 and the second arc-shaped tooth tip portion 226 are symmetrical about the symmetry plane; the first transition portion 221 is respectively connected to the first straight connection portion 223 and the second straight connection portion 224. And the second end 212 of the protective tooth body 21, the second transition part 222 is respectively connected to the second direct connection part 224 and the second end 212 of the protective tooth body 21, the first transition part 221 and the second transition part 222 form a gradually shrinking transition part from the second end 212 of the protective tooth body 21 to the protective tooth tooth 22; the first end of the first arc-shaped tooth tip part 225 is connected to the first direct connection part 223, the first end of the second arc-shaped tooth tip part 226 is connected to the second direct connection part 224, the second end of the first arc-shaped tooth tip part 225 and the second end of the second arc-shaped tooth tip part 226 are integrally connected to form an outwardly convex arc-shaped protective tooth tooth part. Among them, the transition part between the two protective teeth can form a gap to avoid the coil windings in different wire slots. The first arc-shaped tooth tip part 225 and the second arc-shaped tooth tip part 226 as a whole form a protective tooth tip that is convex in a circular arc. Its arc-shaped shape is relatively round on the one hand and will not damage the outer surface of the enameled wire. On the other hand, it also enables it to pass through the gap between the coil windings more smoothly and is conducive to providing coverage on the notch at the top of the wire slot to protect the insulating paper in the coil.

[0035] The component used to drive the protection gear to move radially along the protection gear slideway in the embodiment of the present application is the protection gear rotating disk 3. Figure 1 , Figure 2 , Figure 6 As shown, the protection gear turntable 3 is annular with a through hole in the middle, and the protection gear turntable is provided with a corresponding number of strip through grooves 31 corresponding to the number of protection gear slide grooves of the slide seat, and the first roller needle 23 is penetrated through the strip through grooves 31; the protection gear turntable 3 is provided with a protection gear turntable handle 32, and the protection gear turntable handle 32 is connected to the protection gear drive module. In the embodiment of the present application, the protection gear drive module can be a power component that can provide driving force, such as a cylinder, a servo motor, etc.

[0036] In the preferred embodiment of the protective gear rotating disk provided in the embodiment of the present application, each strip-shaped through groove is respectively provided with five segments from the inside to the outside, which are set as the first segmented groove 311, the second segmented groove 312, the third segmented groove 313, the fourth segmented groove 314 and the fifth segmented groove 315. Among them, the first segmented groove 311 is an arc groove, and the other four segmented grooves are straight grooves. The overall lengths of the four segmented grooves behind are close, and the length of the first segmented groove 311 is about one-fourth of the length of the segmented groove behind. The connection angle between each segmented groove is between 150 degrees and 180 degrees. That is, the distance between the latter segmented grooves is greater than the distance between the previous segmented grooves. When the first roller needle 23 drives the protective tooth 2 to extend, it slides from the fifth segmented groove 315 to the first segmented groove 311, and when retracting, the first roller needle 23 slides from the first segmented groove 311 to the fifth segmented groove 315. With such a design, the first roller needle 23 can slide smoothly in the strip-shaped through groove 31.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in a preferred implementation provided by the embodiment of the present application, a first positioning component 16 is further provided on the first end surface 13 of the slide seat 1, which is used to limit the rotation range of the protection gear rotating disk 3, thereby controlling the extended position positioning and the retracted position positioning of the protection gear 2. One implementation of the first positioning component 16 is a positioning screw. It can also be implemented in other ways, such as the matching positioning of a protrusion or a groove, etc.

[0038] In the preferred embodiment provided by the embodiment of the present application, a protective tooth pressure cover 4 is also included. The overall shape of the protective tooth pressure cover 4 is annular, and a through hole is set in the middle for the stator core or the coil winding protruding from the end of the stator core to pass through. One end face of the protective tooth pressure cover 4 is provided with a receiving space, and the protective tooth pressure cover 4 can be fixed on the slide 1 by screws or clamping. The side provided with the receiving space faces the first end face 13 of the slide 1, and the protective tooth slide groove 15, the protective tooth 2 and the protective tooth rotating disk 3 for rotating the protective tooth 2 on the slide 1 are sequentially arranged between the slide 1 and the protective tooth pressure cover 4. A plurality of stator support blocks 41 are also included, and the plurality of stator support blocks 41 are evenly arranged on the inner arc surface of the protective tooth pressure cover 4. The stator support block 41 is used to contact the upper end face or the lower end of the stator core, so as to support the stator. The planes on which the plurality of stator support blocks 41 play a supporting role are on the same plane as a whole. A stator positioning component 42 is also provided on the inner arc surface of the protective tooth pressure cover 4. The stator positioning component 42 may be provided with one or multiple stator positioning components 42. A preferred embodiment of the stator positioning component 42 is a clamping pin, which can be clamped into a groove extending vertically through the stator core, thereby limiting the rotation of the stator core and achieving the positioning of the stator core.

[0039] The above detailed description is based on the slide 1 and is arranged on the side of the first end face 13 of the slide 1, mainly protecting the insulating paper on the stator core. On the other side of the slide opposite to the first end face 13, that is, on the side of the second end face 14 of the slide 1, an external shaping device is arranged to shape the portion of the coil winding protruding from the core.

[0040] The external shaping device is still based on the slide 1 as a basic platform. A plurality of external shaping grooves 17 are evenly spaced along the ring and facing the center of the circle on the second end surface 14 of the slide 1. The number of the external shaping grooves 17 can be set as required, and can be conveniently set to facilitate the external shaping block to enclose a circle. In the embodiment of the present application, the external shaping grooves are set to four, six or eight, ten or twelve, preferably eight.

[0041] An external shaping block 5 is provided in each of the external shaping slide grooves 17. The external shaping block 5 includes an external shaping slider 51 and an external shaping arc block 52, wherein the external shaping arc block 52 is provided with an arc surface, and the arc surfaces of all the external shaping arc blocks 52 can enclose a circular hole. A buckle 521 is provided on the side of the external shaping arc block 52 opposite to the arc surface, and a slot 511 is correspondingly provided on the external shaping slider 51. The external shaping slider and the external shaping arc block are fixedly installed by the matching connection of the buckle and the slot.

[0042] The outer shaping slider 51 is connected to the outer shaping driving component, and the outer shaping driving component drives the outer shaping slider to slide radially along the outer shaping chute 17, and the outer shaping slider 51 drives the outer shaping arc block 52 to move radially. When the outer shaping arc block 52 moves toward the center of the circle, all the outer shaping arc blocks push the coil winding protruding from the end face of the core to move toward the middle, thereby realizing the outer shaping of the stator coil. When the outer shaping arc block performs outer shaping on the coil, the coil is squeezed inward, which will squeeze or damage the insulating paper in the wire slot. At this time, the protective teeth are inserted between the coil and the insulating paper on the end face of the core, so that the coil will only squeeze the protective teeth, thereby removing the force of the coil on the insulating paper and realizing the protection of the insulating paper. When the outer shaping arc moves closest to the inner arc surface of the slide seat, the arc surface of the outer shaping arc block encloses a circular hole, so that the coil outside the end face of the stator core is integrated into a circle. Thereby, the coil winding will not protrude from the arc surface outside the iron core.

[0043] In the embodiment of the present application, the external shaping drive module can be set as a plurality of small motors or cylinders, and each external shaping slider is connected to a motor or cylinder. In the preferred embodiment of the present application, an external shaping turntable 6 is provided. The external shaping turntable 6 provided in the embodiment of the present application is annular with a through hole in the middle, and a corresponding number of strip through grooves are provided on the external shaping turntable corresponding to the number of external shaping slide grooves of the slide seat. A second roller needle 53 is provided on the external shaping slider. The second roller needle 53 is penetrated on the strip through groove; the external shaping turntable is provided with an external shaping turntable handle 61, and the external shaping turntable handle 61 is connected to the external shaping drive module, and the external shaping drive module can be realized by a single motor or cylinder. The strip through groove of the external shaping turntable is a straight groove, and the first end of the straight groove is close to the inner arc surface of the turntable, and the second end is close to the outer arc surface. The groove line of the straight groove is perpendicular to the radius of the end point starting from the first end of the connector.

[0044] The external shaping device provided in the embodiment of the present application also includes an external shaping cover 7, which is an annular component with a through hole in the middle. The external shaping cover 7 is provided with an external shaping block accommodating space, and the external shaping cover 7 is fixedly connected to the slide 1, so that the external shaping block 5 and the external shaping turntable 6 are accommodated in the external shaping block accommodating space. Thus, on the second end face 14 of the slide 1, an external shaping device composed of the slide 1, the external shaping slide 17, the external shaping block 5, the external shaping turntable 6, and the external shaping cover 7 is formed. A second positioning component 18 is also provided on the second end face 14 of the slide 1, which is used to limit the rotation range of the external shaping turntable 6, so as to control the extended position positioning and the retracted position positioning of the external shaping block 5. One implementation method of the second positioning component 18 is a positioning screw. It can also be implemented in other ways, such as the matching positioning of protrusions and grooves.

[0045] The coil shaping device provided in the embodiment of the present application can shape the coil outside one end of the stator core alone, or it can be arranged in two pieces up and down to shape the coil outside the upper and lower end surfaces of a stator core at the same time. When it is arranged up and down to form a device that can shape the upper and lower parts at the same time, in the coil shaping device arranged at the upper part, its outer shaping device faces upward and the protective tooth device faces downward, while in the coil shaping device arranged at the lower part, it is just the opposite, its outer shaping device is arranged downward and the protective tooth device is arranged upward.

[0046] The coil shaping equipment provided by the present application has the following working principle: the stator core with the coil is automatically placed into the protective tooth pressure cover by a manipulator, lifted by a stator support block, supported by a stator support block, and positioned by a stator positioning block. The entire coil shaping equipment and the stator core with the coil are moved to the shaping station, and the protective tooth turntable and the external shaping turntable are driven to rotate by a power source. The corresponding notches are evenly distributed on the protective tooth turntable and the external shaping block turntable, so that the needle roller moves along the turntable notch, thereby driving the protective tooth and the external shaping block slider to move back and forth along the fixed track of the slide seat, thereby realizing the protection of the slot insulation and the shaping of the coil. Since the outer whole block has an increased edge, the occurrence of coil wire damage and coil flattening is effectively reduced, while protecting the insulating paper.

[0047] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A protective tooth for coil shaping, characterized in that: The protective tooth body comprises a long thin sheet, the protective tooth body comprises an integrally formed first end and a second end, the first end is provided with a protective tooth driving part for driving the protective tooth to move forward and backward, the second end of the protective tooth is connected with a protective tooth tooth integrally formed with the protective tooth body, the protective tooth tooth comprises a first transition part, a second transition part, a first straight connection part, a second straight connection part, a first arc-shaped tooth tip part and a second arc-shaped tooth tip part, wherein a symmetry plane is provided in the middle along the length direction of the protective tooth body, the first straight connection part and the second straight connection part are symmetrical about the symmetry plane, the first arc-shaped tooth tip part and the second arc-shaped tooth tip part are symmetrical about the symmetry plane, and the first arc-shaped tooth tip part and the second arc-shaped tooth tip part are symmetrical about the symmetry plane. The arcuate tooth tip portion is symmetrical about the symmetry plane; the first transition portion is respectively connected to the first direct connection portion and the second end of the protective tooth body, and the second transition portion is respectively connected to the second direct connection portion and the second end of the protective tooth body, and the first transition portion and the second transition portion form a gradually shrinking transition portion from the second end of the protective tooth body to the protective tooth; the first end of the first arcuate tooth tip portion is connected to the first direct connection portion, and the first end of the second arcuate tooth tip portion is connected to the second direct connection portion, and the second end of the first arcuate tooth tip portion and the second end of the second arcuate tooth tip portion are integrally connected to form an outwardly convex arcuate protective tooth tooth portion.

2. The protective tooth for coil shaping according to claim 1, characterized in that: The protection tooth driving part is a first cylindrical roller needle vertically arranged on the upper surface of the first end of the protection tooth body.

3. A tooth protection device, characterized in that: include: A circular ring slide seat with a through hole in the middle, wherein a first end surface of the slide seat is evenly spaced along the ring and provided with a plurality of protection tooth slide grooves facing the center of the circle; Each of the protection tooth slide grooves is provided with a protection tooth as described above which can move radially along the protection tooth slide groove; A protection tooth driving module, wherein the protection tooth driving module is respectively connected to the protection tooth driving part of each protection tooth and is used to drive the protection tooth to move along the protection tooth sliding groove.

4. The tooth protection device according to claim 3, characterized in that: The protection tooth driving part is a cylindrical first roller needle vertically arranged on the upper surface of the first end of the protection tooth body; It also includes a protective gear turntable, which is in the shape of a ring with a through hole in the middle, and a corresponding number of strip through grooves are arranged on the protective gear turntable corresponding to the number of protective gear sliding grooves of the sliding seat, and the first roller needle is passed through the strip through groove; the protective gear turntable is provided with a protective gear turntable handle, and the protective gear turntable handle is connected to the protective gear driving module.

5. The tooth protection device according to claim 4, characterized in that: It also includes a first positioning component, which controls the radial extension position and radial retraction position of the protection tooth.

6. The tooth protection device according to claim 4, characterized in that: It also includes a protective tooth pressure cover, which is an annular component with a through hole in the middle. The protective tooth pressure cover is provided with a protective tooth accommodating space. The protective tooth pressure cover is fixedly connected to the sliding seat, and the protective tooth and the protective tooth rotating disk are accommodated in the protective tooth accommodating space.

7. The tooth protection device according to claim 6, characterized in that: The protective tooth pressure cover is provided with a stator support block for supporting the stator and a stator positioning block for limiting the rotation of the stator.

8. Coil shaping equipment, characterized in that A tooth protection device comprising any one of claims 3 to 7; A plurality of external shaping slide grooves facing the center of the circle are evenly spaced along a circular ring on a second end surface opposite to the first end surface of the slide seat; An external shaping block is arranged in each of the external shaping chute, and the external shaping block is provided with an arc surface toward the center of the circle; The outer shaping driving module is connected to the outer shaping block and drives the outer shaping block to move radially along the outer shaping slot, so that the arc surfaces of the outer shaping block are enclosed to form a circular hole when they are close.

9. The coil shaping device according to claim 8, characterized in that The outer shaping block is provided with a second roller needle; It also includes an outer shaping turntable, which is an annular ring with a through hole in the middle, and a corresponding number of strip-shaped through grooves are arranged on the outer shaping turntable corresponding to the number of outer shaping slide grooves of the slide seat, and the second roller needle is inserted into the strip-shaped through groove; The outer shaping turntable is provided with an outer shaping turntable handle, and the outer shaping turntable handle is connected to the outer shaping driving module.

10. The coil shaping device according to claim 9, characterized in that It also includes an external shaping cover, which is an annular component with a through hole in the middle. The external shaping cover is provided with an external shaping block accommodating space. The external shaping cover is fixedly connected to the slide seat, and the external shaping block and the external shaping turntable are accommodated in the external shaping block accommodating space.

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